Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.8.0.1
Subsequent Events - Additional Information (Detail) - USD ($)
9 Months Ended
Oct. 02, 2017
Mar. 27, 2017
Sep. 30, 2017
Minimum      
Subsequent Event [Line Items]      
Expected gross proceeds from rights offering     $ 8,000,000
Maximum      
Subsequent Event [Line Items]      
Expected gross proceeds from rights offering     $ 12,000,000
Non Qualified Stock Options | Senior Vice President and Chief Financial Officer      
Subsequent Event [Line Items]      
Stock options granted   600,000  
Awards valued per share   $ 1.28  
Options expiration period   10 years  
Share Based Compensation Arrangement By Share Based Payment Award, Vesting Commencement Date   Mar. 27, 2018  
Share-based Compensation Arrangement by Share-based Payment Award, Monthly Ratable Award Vesting Period   36 months  
Percentage of time based vesting for options   75.00%  
Subsequent Event | Non Qualified Stock Options | Senior Vice President and Chief Financial Officer      
Subsequent Event [Line Items]      
Stock options granted 600,000    
Awards valued per share $ 0.59    
Options expiration period 10 years    
Share Based Compensation Arrangement By Share Based Payment Award, Vesting Commencement Date Oct. 02, 2018    
Share-based Compensation Arrangement by Share-based Payment Award, Monthly Ratable Award Vesting Period 36 months    
Percentage of time based vesting for options 75.00%    
Subsequent Event | Non Qualified Stock Options | Awards Vesting on October 2, 2018 | Senior Vice President and Chief Financial Officer      
Subsequent Event [Line Items]      
Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage 25.00%